/*
 * Copyright (c) 2017 NCIC, Institute of Computing Technology, Chinese Academy of Sciences
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.ncic.bioinfo.sparkseq.partitioner

import org.apache.spark.rdd.RDD
import org.ncic.bioinfo.sparkseq.data.basic.FastqPairRecord
import org.ncic.bioinfo.sparkseq.data.partition.FastqPairRecordPartition

/**
  * Author: wbc
  */
object FastqPairPartitioner {

  def partition(recordRdd: RDD[FastqPairRecord]): RDD[(Int, FastqPairRecordPartition)] = {
    recordRdd.mapPartitionsWithIndex((partitionId, recordIterator) => {
      Seq((partitionId, new FastqPairRecordPartition(partitionId, recordIterator.toIterable))).iterator
    })
  }

  def partition(recordRdd: RDD[FastqPairRecord],
                partitionCount: Int): RDD[(Int, FastqPairRecordPartition)] = {
    recordRdd.repartition(partitionCount)
      .mapPartitionsWithIndex((partitionId, recordIterator) => {
        Seq((partitionId, new FastqPairRecordPartition(partitionId, recordIterator.toIterable))).iterator
      })
  }

}
